SERVLET-CONNECTIVITY

I HAVE CREATED HTML PAGE FROM THAT I M ACCEPTING USER NAME & PASSWORD & SUBMIT BUTTON OF THIS HTML PAGE IS CALLING MY SERVLET. IN SERVLET I M CHECKING USER NAME & PASSWORD. IF USER NAME & PASSWORD IS CORRECT THEN I WANT TO DISPLAY SOME OTHER HTML PAGE WHICH IS PREVIOUSLY CREATED. BUT I DONT WANT TO WRITE HTML CODING IN MY SERVLET PROG. HOW TO GET THIS? response.Redirect(url),method is not working.